SNHLSensorineural Hearing Loss
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In SNHL, both air and bone conduction thresholds will be elevated with a negligible air-bone gap.
The comparison of each diagnosis across the services (Figures 4, 5, 6, 7), revealed that the Air Force had much higher injury rates for NIHL, SNHL, and tinnitus than the other 3 services for all 5 years.
When all presenting conditions were classified according to the WHO stages I-V HIV disease classification, the top 5 manifestations in our study included adenoid hypertrophy/hyperplasia (stage I), cervical lymphadenopathy (stage I), CSOM (stage II), OME (stage II) and SNHL (stage II) (Fig.
Abbreviations: ANOVA = analysis of variance, B = baseline, CaST = California Syllable Test, CVC = consonant-vowel-consonant, HINT = Hearing in Noise Test, HPTA = high-frequency pure-tone average, LPTA = low-frequency pure-tone average, MRI = magnetic resonance imaging, NS = not significant, OHI = older (subjects with) hearing impairment, ONH = older (subjects with) normal hearing, P/I = performance/intensity, QuickSIN = Quick Speech in Noise Test, SD = standard deviation, SeRT = sentence reception threshold, SNHL = sensorineural hearing loss, SNR = signal-to-noise ratio, SPL = sound pressure level, YNH = younger (subjects with) normal hearing.
Determining the risk for development of SNHL is important when faced with a child with meningitis.
In 1997, the patient experienced a recurrence of his right-sided SNHL 2 days after he took another trip by air, and he presented to our hospital.
Since SNHL typically produces greater audiometric deficits at high frequencies, disproportionate impairments in consonant identification would be expected for those consonants whose discrimination depends disproportionately on low-intensity, high-frequency acoustic cues [6,21-22].
Permanent, pure SNHL is the most prevalent type of auditory impairment in blast trauma, accounting for 35 to 54 percent of injuries [2].
We reviewed the records of 63 patients--23 men and 40 women, aged 34 to 91 years (mean: 59)--who had undergone SPECT for the evaluation of head trauma, SNHL, tinnitus, vertigo, or a combination of these conditions.
Abbreviations: ANOVA = analysis of variance, CST = Connected Speech Test, HINT = Hearing In Noise Test, HL = hearing level, HSD = honestly significant difference, IRB = Institutional Review Board, NAL-R = National Acoustics Laboratory-Revised, PHAB = Profile of Hearing Aid Benefit, PTA = pure tone average, SADL = Satisfaction with Amplification in Daily Life, SD = standard deviation, SII = Speech Intelligibility Index, SNHL = sensorineural hearing loss, SNR = signal-to-noise ratio, SPL = sound pressure level, SRT = speech reception threshold, VA = Department of Veterans Affairs.
On the left, there was a profound, flat SNHL with no measurable discrimination.